Hydrazine hydrate (1:1) → 2-chloro-N-[1-(2-hydrazino-2-oxoethyl)-2-oxo-1,2,3,4-tetrahydroquinolin-3-yl]-6H-thieno[2,3-b]pyrrole-5-carboxamide

HRID 1178444Notes

Reaction equation

HRID 1178444 reaction equation
O.[NH2:2][NH2:3].[Cl:4][C:5]1[S:31][C:8]2[NH:9][C:10]([C:12]([NH:14][CH:15]3[CH2:24][C:23]4[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=4)[N:17]([CH2:25][C:26]([O:28]C)=O)[C:16]3=[O:30])=[O:13])=[CH:11][C:7]=2[CH:6]=1>CCO>[Cl:4][C:5]1[S:31][C:8]2[NH:9][C:10]([C:12]([NH:14][CH:15]3[CH2:24][C:23]4[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=4)[N:17]([CH2:25][C:26]([NH:2][NH2:3])=[O:28])[C:16]3=[O:30])=[O:13])=[CH:11][C:7]=2[CH:6]=1

Participants

4

Reactant 2

HCID 24654Hydrazine hydrate (1:1)HCID 100020612-Chloro-N-[1-(methoxycarbonylmethyl)-2-oxo-1,2,3,4-tetrahydroquinolin-3-yl]-6H-thieno[2,3-b]pyrrole-5-carboxamide

Product 1

HCID 587218262-chloro-N-[1-(2-hydrazino-2-oxoethyl)-2-oxo-1,2,3,4-tetrahydroquinolin-3-yl]-6H-thieno[2,3-b]pyrrole-5-carboxamideYield 76%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Hydrazine monohydrate (1 mL, 20.6 mmol) was added to a suspension of methyl [3-{[(2-chloro-6H-thieno[2,3-b]pyrrol-5-yl)carbonyl]amino}-2-oxo-3,4-dihydroquinolin-1(2H)-yl]acetate (Example 1); 221 mg, 0.53 mmol) in EtOH (10 mL) and heated to reflux for 20 hours. On cooling the mixture was concentrated under reduced pressure and H2O (20 mL) added and the white precipitate filtered off and dried in vacuo to give the title product (169 mg, 76%) as an off white solid.

Workup

  1. temperatureto reflux for 20 hours
  2. temperatureOn cooling the mixture
  3. concentrationwas concentrated under reduced pressure and H2O (20 mL)
  4. additionadded
  5. filtrationthe white precipitate filtered off
  6. customdried in vacuo

Sources & evidence

ORD record
ord-db163e69a8154b239a68716023f704de
Source dataset
uspto-grants-2007_10
Patent number
US07276517B2

Reaction notes

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